Visualization of megakaryocyte differentiation and proplatelet production in vitro. Representative high-definition differential interference contrast images of a fetal liver cell culture over time using the IncuCyte system. (A) Arrow highlights a single progenitor cell undergoing cytoplasmic differentiation over 43 hours to become a megakaryocyte. (B) A single mature megakaryocyte undergoing proplatelet production over 3 hours.